Attachment for sewing-machines.



A. N. OATHOUT. ATTAGHMBNT PoR SEWING MACHINES.

APPLIOATION FILED APB.. 18, 1911.

Patented Sept. 9, 1913.

3 SHEETS-SHEET 1.

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t We. H v/ r -w i :Pimm -i COLUMBIA PLANOGRAPH Co.,WAsHlNGToN. D. c.

A. N. DATHOUT. l ATTACHMENT PoR SEWING MACHINES.

APPLICATION FILED APR.18, 1911.

1,072,489, l Patented sept.9,1913.

3 SHEETS-SHEET 2.

coLUMBM PLANOURAPH co.. wAsmNu'roN. D. c.

A. N. OATHOUT.

ATTACHMENT EOE SEWING MACHINES.

APPLIGATION FILED APR.18, 1911.

3 SHEETS-SHEET 3.

'-.uLUMBM PLANOGRAPH co..w.\sMlNc|ToN. n. c.

ni) s'rnrns 'arrivai nitro n .ARTHUR N. OATI-IOUT, 0F GLOVERSVILLE,NEWYORK, ASSIGNOR 'IO EDWIN L. MEYERS AND DAVID F. MEYER, 'CONSTITUTINGTHE FIRM OF LOUIS IVIEYERS & SON, OF

NEW YORK, N. Y.

Specification of Letters Patent.

ACWIAGHVMENT. Fon SEWING-MACHINES.

Patented Sept. 9, 1913.

To all 'whom/t mayl concern Beit known that I, 'ARTHUR N. OATHoU'n acitizen `ofthe United States, and resident of Gloversville,Fulton^county,fNew York,

tachment for Sewing-Machines, of which the following is a specification.

My invention relates to anl attachment for sewing machines, particularlyadapted" for use in connection with machines such as are ordinarily usedin making gloves, that is, making the seams and-trimming stitches.

The inventionhas for its object toprovide such machines with anattachment whereby at the will ofthe operator the threads may beautomatically knotted on-'the linside of the glove atany pointlduringthe operation andinstantly restored to thel properlyv adjusted sewingposition, thereby avoiding the disadvantages of the present processaccording to which all of thefknotting of the threads is done-by hand'.

It 'will not befnecessary Jto-describe the sewing machine as a whole,except in so far as certain elements thereofiare"necessarilydescribed-in Iorder to show the cooperation of the parts of the machinewith the action of my attachment since the machines as such are theusual sewing machines, the construction of which isr fully known. The'funda mental principle upon which my attach ment causes the sewingmachine `itself to knot the threads'is a known principley and it will'therefore be sufIici'entto define it by stating that theA sewingmachine 'will vknot the thread on the under surface ofthe'fabric throughwhich the needlepasses if the fabric feeding devices are temporarilythrown out of operation so that the needle passes through the sameaperture two or three times in succession. 4

invention provides anv attachment which may readilyI be appliedto anyexisting sewing machine, and lwhich enables the f operator, withoutnecessarily removing his i hands from'the work, to' throw out ofoperation the' fabric-feeding devices and alsof to cause suchfeedin'gfdevices to: resume their normal operationy at the exactadjustment as t-o length yofstitch etc. to which the machine had beenpreviously set.

The invention'is illustrated'in the accom* panying drawings, in whichthe preferred -foriniof my invention is illustrated as ap-V ypliedtowhat is known as a Wheeler `& VVVi'lson glove-stitching machine.

have invented -al certain new and useful Ati In the drawings Figure 1 isa horizontal section through the apron of the machine,

i taken along the line 1.-1 ofFig. 2; Fig. 2 is'lan end '.elevation,taken from the right of Fig.v l; Fig. 3 is a partialV transverse sectiontaken along the line BH3 of Figfl; Fig. 4 is a similar section, takenalong the line 4 4 of Fig. 1;` Fig- 5 isa similar section taken alongthe line 5 5 of Fig. 1; and Fig. 6 correspondsto the-left hand side ofFig. 2 with themechanism in released position.

- A bed plate 1 is provided with a depend-` ent marginal apron 2 'and anend pedestal 3; the endf'portions `of the apron togetherwith'transverse'ribs 4, 4 and the pedestals are `provided with suitablebearingsto receivey the various, operative shafts and spindles.

Themachine is driven by a belt 5 which engages a pulley fixed'to shaft 6and this shaft by means ofran eccentric or cra-nk (not shown) and links7 7 drives shaft 8 `sup ported by the apron 2.

Pivotally attached to rib 4 at9 is a rocking lever 10 (Fig. provided atone end with a yoke 11 embracing a cam 12 fixed to shaft 8, and at theother end with an inshort arm 22 fixed to' a shaft 28. This shaft 23carries a second larm23 (Fig.A 4) provided' withra yoke 24 embracing acam 25, fixed to one end of shaft S, (as shown in Fig. 1.) A spring Q6(Fig. 5) keeps the link 19 pressedagainst the slide 21. f

Supported inthe pedestal -3 (shown in dotted lines at the right of Fig.l1 Vand in section inFig. 3) is a'spind'le 27, having fixed thereto anarm 2S between the end of which and the link 15, and pivotally attachedto both, is a link 29.

At the end of spindle 27, outside the pedestal, is fixed a feed controllever 30 (see Fig. 2) having an eye in its outer end through which ispassed a rod 31, having its vupper part screw threaded. A pair of checknuts 32 are fixed to the rod above the eye, and an adjustable nut 33 issimilarly fixed below t-he eye. The rod 31 is long enough to passthrough a suitable guide hole in the bed plate 1, and is connected belowby a chain 34 to a foot treadle 35. A spring 36 kept under compressionby the nut 39 is interposed between the bed plate 1 and the nut 39, andkeeps the rod 31 and control lever 30 normally in the upper position aslimited by the pin 40 projecting in the path of the abutment 41 of thearm 30. Below the control lever and near its outer end is a stop screw38, threaded in a support 37, which rises from the base plate.

From the above description it will be apparent that the feeding of thefabric is controlled by the amount of forward movement which is given tothe feeder 20(Fig. 5). The length of stitch is controlled initially bysetting the shaft 27 (Fig. 3) to the desired position. This will causethe block 14 on the link 15 to change its position with reference to theaxis of motion of the lever 10 and consequently effects to a greater orless degree the rocking of the shaft 17 which controls the forward andbackward movement of the feeder 20. When, however, the block 14 isplaced in a position corresponding with that of the axis of motion ofthe lever 10, then the shaft 17 will not rock at all and the feeder 20will be moved neither fo-rward nor back, and this, without affecting anyother part of the sewing machine. The

up and down movement of the feeder 2O is controlled by the shaft 23, thearm 22 and slide 21 (Fig. 5) the stitching mechanism, the needle and allthe other mechanism of the machine will continue to operate and performtheir functions precisely as at other times.

The operation of the machine provided with my attachment isas follows:The machine is first put into the ordinary operating condition andthelength of the stitch determined by an adjustment of the stop screw 3Sand the apertured lever 30, so that when the treadle 35 is in thedepressed condition shown in Fig. 2, a certain predetermined length ofstitch will be taken by the machine. In this position the stop nuts 32depressing the end of lever 30 cause the lever 30 to rest upon the headof the screw 38. In that position the machine carries out its normaloperation of producing a series of equal stitches by feeding the fabricintermittently beneath the needle and below these parts all rockingaction of the shaft 17 and consequently all forward and backwardmovement of the feeder 20. In other words, when the treadle 35 of Fig. 2is released, it instantaneously assumes the position shown in Fig. 6 andin that position the fabric will cease to feed through the machine butthe needle will pass several times through the same hole and cause thethread to be knotted automatically on the under side of the fabric. Theoperator may then at will, by merely depressing the treadle 35, eithercontinue the same trimming stitch, or may take the fabric out of themachine and relocate it therein so that a new seam or trimming stitchmay be begun at some other point. As soon as this readjustment of thefabric has been brought about, the treadle 35 is depressed and themachine begins to sew not only regular stitches, but stitches exactlyand precisely the identical length as those for which the machine hadbeen originally adjusted.

It is obvious that instead of normally depressing the treadle 35 theattachment could be so reconstructed that the operation is reversed andthat the normal operation of the machine may be carried on during theundepressed condition of the treadle and the feeder be thrown out ofoperation when the treadle is depressed. Many modifications may alsoreadily suggest themselves to anyone skilled in the art and aretherefore within the scope of this invention.

I am aware that it is not new to throw the feeder out of operation in asewing machine, or to cause the thread to be knotted on the under sideof the fabric and allow the needle to pass several times through thesame aperture, but

What I do claim is:

An attachment for sewing machines comn prising means for controlling thefabric feeding devices, a pivoted arm operatively connected therewith,lever mechanism adjustably secured to said arm, an abutment on said armmovable in the arc of a circle about the pivot of said arm, a fixed stoplocated in the path ofsaid abutment and adapted to coperate therewith tolimit the movement of the arm in one direction, an adjustable stoplocated on said machine between said fixed stop and said lever mechanismand adjustable toward and away from said arm to limit the movementthereof CTT in the opposite direction, said lever mechas In testimonywhereof I have hereunto set nisni being arranged to force said arm myhand in the presence of two subscribing toward said adjustable stop, acompression Witnesses. spring adapted to normally maintain said A ARTHURN. OATI-IOUT. abutment on the arm in engagement With Witnesses:

said fixed stop and means for adjusting the CHARLES V. STEWART, tensionof said spring.

, ALBERT LAROUX.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, '.D'. C.

